What is the concentration of k + ions in a 0.045 m k2co3 solution assuming complete dissociation? express the concentration in molarity?

3. Simple possession of alcoholic beverages by persons under age 21 is not prohibited by law. True false

How many grams of water are made from the reaction of 4.0 grams of hydrogen gas with the given reaction 2H2+O2--->2H2O

What is ancient japan remembered for

A student puts a glass of water in the freezer. Later, he notices ice forming on the surface of the water. Which property of water best explains why ice forms on its surface? A student puts a glass of water in the freezer.

2. Suppose you placed two flasks, each filled with 100 milliliters of water, on a lab bench Then you covered one flask tightly with plastic wrap. After 3 days, how would the amount of water in the flasks compare? Explain your answer

Explain why glacial deposits have been found in Africa?

Which of the following would result in butyl phenyl ether as the major product? a. Reaction of phenoxide with 1-bromobutane b. Reaction of 1-butanol with bromobenzene c. Reaction of phenyl magnesium bromide with 1-butanol d.

A 200-gram sample of a radioactive nuclide is left to decay for 60 hours. At the end of 60 hours, only 25 grams of the sample is left. What is the half-life of the nuclide sample? 60 hours 30 hours 40 hours 20 hours - - - > I think 20?

What is the symbolic formula for acetocholine?

How many hydrogen atoms are present in a hydrocarbon chain of five carbon atoms with two double bonds and two single bonds? 10 6 8 12?